Hi, got my nexus one a week ago, and I love it, but have a few questions about it and some apps. 1. A lot of times the screen is unresponsive in the unlock screen. Most of the time simply hitting the lock button twice to refresh the screen works, but a few times I have had to restart (a difficult thing to do when the screen is nonresponsive). Is this normal glitchiness or should I seek a replacement before I invest too much time in customizing the phone? 2. Along the same lines as above, is there a way to turn off the phone with hard buttons only. As it took me about 10 minutes the times the screen was non-responsive and would work for a sporadically for a few seconds where I could attempt to hit the power down button. 3. Just wondering if you can configure Astro file manager to asscociate different extensions with different apps (e.g. open .djvu in djvudroid). Thanks a lot!